A player kicks up a ball at an angle θ with the horizontal. The horiz

1.	A player kicks up a ball at an angle θ with the horizontal. The horizontal range is maximum when θ is equal to (A) 30° (B) 45° (C) 60° (D) 90°
Answer» Correct Option is (B) \(45^\circ\) Range of projectile , \(R = \frac{u^2 \ sin2 \ \theta}{g}\) \(R_{max} = \frac{u^2 \ sin2 \ \theta}{g}\) \(\because \theta = 45^\circ\) \(R_{max} = \frac{u^2 \ sin 90^\circ}{g}\) \(R_{max} = \frac{u^2}{g}\) Correct option is: (B) 45°

A player kicks up a ball at an angle θ with the horizontal. The horizontal range is maximum when θ is equal to (A) 30° (B) 45° (C) 60° (D) 90°

Answer»

Correct Option is (B) \(45^\circ\)

Range of projectile ,

\(R = \frac{u^2 \ sin2 \ \theta}{g}\)

\(R_{max} = \frac{u^2 \ sin2 \ \theta}{g}\)

\(\because \theta = 45^\circ\)

\(R_{max} = \frac{u^2 \ sin 90^\circ}{g}\)

\(R_{max} = \frac{u^2}{g}\)

Correct option is: (B) 45°